Improvement in hem ming-guides



i ming-guide embodying our invention.

UNrren STATES WM. GASKILL AND GEO. H. KNIGHT, 0F CINCINNATI, OHIO.

IMPROVEMENT IN HEMMlNG-GUIDES.

Specitication forming part of Letters Patent No. 47,630., dated May 9,18(15.

To all whom t may concern:

Be it known that We, WILLYAM GASKILL and GEORGE H. KNIGHT, both ofCincinnati, Hamilton county, Ohio, have invented a new and usefulImprovement in Hemming Guides or Scrolls for Sewing-Machines; and We dohereby dclare the following to be a full, clear, and exact descriptionthereof, reference being. had to the accompanying drawings, making partof this specification.

Our invention relates to a provision upon a sewing-machine hemming-gnidefor the automatic cross or counter crimping and smoothing out'ot'curled, creased, or wrinkled edges ot' Woven fabrics in the act ofentering the scroll, so as to enable the hemmer to operate upon the mostrefractory material Without the necessity of previously iiattening itsedge by a hot iron, or of resorting to the still more tedious expedient,familiar to seamstresses, of cross-crim pin g by hand.

Figure l is a perspective view of a hem- Fig. 2 represents our guidewith a piece of cloth in position. Fig. 3 is an enlarged axial sectionof the guide, showing its peculiar crimping action on the cloth edge.Fig. 4f is designed to illustrate the process of hand-crimping. Fig. 5lshows aV modification of our invention.

Our scroll consists of a double volute or pair of convoluted plates, Aand B, united perma-` nently together at their interior con volutions,and converging toward their delivery ends in the manner shown. The saidscroll is connected to the cloth-plate of a sewing-machine by means ofsuitable flange, C, screw D, and plateE, or hyanyother suitablemeansthatmay accord with thestyle or requirements ofany speciticmachine.Werenderthescrollavailablefor a large class of refractory goods whichare liable to have their edges improperly curled or creasedsuch asKentucky jeans, duck, and other like fabrics-by providing the receivingend of the inner convolution, B,of the scroll with an axial stem, j',screw-threaded to fit an interiorly screw-threaded head or knob, F,which is abruptly shouldered at its end nearest the scroll, Whose outerconvolution it slightly exceedsin diameter. l

VVheu required for use the hea-d AFis adjusted to such a longitudinaldistance from the receiving end of the scroll as, without entirelyclosing the entrance thereof, to sharply crease or crimp the clothtransversely to its` edge, as represented in `Figs. 2 and 3, thusperforming quickly and eectively by an auto4 matic agent work heretoforerequiring the ngers or the smoothing-iron of the seamstress. (See Fig.4.)

By adjusting the head F away from or near` y,

to the entrance of the scroll the instrument may be adapted for 4usewith goods of any thickness and condition.

By adjusting the head F in proximityto the mouth of thescroll, suitableto the substance and nature ofthe goods, a double reverse crimp isimparted thereto in a direction transverse to any curl, crease, orreverted fold of its edge, as shown in Figs. 2 and 3.

In" using our scroll with goods of a less reexample, the head F mayhavea screwfthr` "ded stem enter-1n g acorrespondingly screW-threadf,

ed socket in the scroll; or the head may be seL cured to a smooth axialprolongation by means of a setscre\v,and may be of someyvhat diffen entform,as globular, egg-formedmrlzoblon g, or for work ot' uniformsubstance andfquality the head may be permanently united to the"stein.

By constructing our head or knob F with an abrupt shoulder of. greaterdiameter than the outer scroll it is adapted to act with better effectin straightening any irregularities in the Y goods than previous devicesin which the head has been made of smaller diameter than the scroll orWithout the abrupt shoulder.

We claim herein as new and of` our inventionl. The provision at thereceiving end of a hemming-scroll ot' theabruptlyshouldered axial heador knob F, of diameter greater than that of the outer convolution of thescroll for In testimony of which invention we hereunto the automaticcross-crimping of the cloth edge set our hands. iu the act of enteringthe scroll, substantially as Set forth. WILLIAM GASKILL.

GEO. H. KNIGHT.

2. A hemming-scroll provided at its receiving end with thescrew-threaded axial prolon- Witnesses: c grationf, having theadjustable head 01 knob JAMES H. LAYMAN,

F, as set forth, or its equivalent. l F. MILLWARD.

